Caster.



PATENTED OCT. 18, 1904.

P. P. BISGHOFP.

v GASTER. APPLICATION FILED D110. 21, 1903.

N0 MODEL.

UNITED STATES Patented October 18, 1904.

FREDERICK F. B1soHoFF', oF CHICAGO, ILLINOIS.

CASTER.

SPECIFICATION forming part of Letters Patent No. 772,863, dated. October18, 1904.

Application filed December 21, 1.903. SerialNo. 185,911- (No model.) i

To all w/hnm it may concern:

Be it known that I, FRED RIGK F. BIsoIIoFF, a citizen of the UnitedStates of America. and

a resident of Chicago, in the county of Cook and State of Illinois, haveinvented-certain new and useful Improvements in Casters, of which thefollowing is a specification.

Thepresent invention relates to that type of furniture-casters used uponiron bedsteads, and has for its object to provide a simple and eflicientsocket or bushing adapted by convenient attachment to the bore of atubular iron bedpost to afford a substantial connection of the caster tosuch post, all. as will hereinafter morefully appear and be moreparticularly pointed out in the claims.

In the accompanying drawings, illustrative of the present invention,Figure 1 is a vertical axial sectional elevation of a caster embodyingthe present improvements. Fig. 2 is a side elevation of the socket orbushing detached. r Fig. 3 is a top view of the same.

Similar. numerals of reference indicate like parts in thedifferentviews.

Referring to the drawings, 1 represents the lower portion ofatubulariron bedpost'hav ing the usual inturned flange 2 at its lower end, andwhich flange or rimis usually formed by an inward displacement of themetal of the post in cutting the same from a piece of tubing by anordinary pipe-cutter.

3 is the caster-Wheel, journaled in a yoke or frame 4, which in turncarries the vertical caster-pintleo in the usual manner, such partsbeing of any usual form and construction.

6 is the socket or bushing of the present invention, of a diameterapproximating the internal diameter of the tubular bedpost 1 andprovided at its lower end with an out- 8 is an annular depression in thecircular.

wall ofthe bushing immediately adjacent to the rim or flange 7 aforesaidand adapted to engage with the inturned flange 2 of the bedpost toprevent accidental disengagement of the bushing.

9 is a split or gap formed in the side of the bushing and extending thevertical height of the same, and which permits of the bushing beingcontracted in its circumference in the operation of inserting thebushing into place in the boreof the tubular bedpost 1. In the preferredform of the present invention, as

shown in the drawings, such split or gap is of a triangular shape, withthe greatest width at top, so that the top portion of the bushing canreceive the greatest degree of contraction in the operation of insertingthe bushing in place to greatly facilitate such operation.

10 is a spiral depression formed in the circular wall of the bushingfrom top to bottom and which merges into the annular depression 8aforesaid. During the operation of inserting the bushing into place suchspiral groove is adapted to have engagement with the inturned flange 2of the bedpost, so that with a turning movement imparted to such bushingthe same will screw into place in a ready and easy manner.

, 11 is an inturned flange at the upper end of the bushing, againstwhich a washer or collar 12 on the upper end of the caster-pintle 5 hasbearing, as illustrated in Fig. 1.

13-is'an annular inturned fold of the bottom flange or rim 7 aforesaidand adapted to form an annular receiving-pocket for a disk or collar 14,which surroundsthe base portion of the aforesaid pintle and has bearingupon the pintle-boss 15 of the-caster-frame 4.

Having thus fully described my said inven tion, what I claim as new, anddesire to secure by Letters Patent, is-

1. A holding-bushing for casters, comprising an open-sided sleeve,having an outturned abutment-rim at its lower end, anda reenteringannular depression immediately above said rim and adapted for engagementwith an inturned flange or bead on the lower end of' a 3. Aholding-bushing for casters, comprising a cylindrical sleeve, having alongitudinally-arranged triangular gap in its periphery, an outturnedabutment-rim at its lower end, and an annular depression adjacent tosaid rim and adapted for engagement with an inturned flange or bead onthe lower end of a tubular bedpost, substantially as set forth.

4. A holding-bushingfor casters, comprising a cylindrical sleeve havinga longitudinally-arranged triangular gap in its periphery, an outturnedabutment-rim at its lower end, a spiral depression in said periphery,and an annular depression adjacent to said rim and adapted forengagement with an inturned flange or head on the lower end of a tubularbedpost, substantially as set forth.

5. The combination in a caster, of a holding-hushing consisting of anopen-sided sleeve having an outturned abutment-rim at its lower end, aninturned annular fold on said rim forming an annular receiving-chamber,an annular depression adjacent to said rim and adapted for engagementwith an inturned flange on the lower end of a tubular bedpost, and aninturned bearing-flange at its upper end, a pintle provided withbearing-washers at its upper end and base, and a caster-wheel carried bysaid pintle,su bstantially as set forth.

6. The combination in a caster, of a holding-bushing consisting of anopen-sided sleeve having an outturned abutment-rim at its lower end, aninturned annular fold on said rim forming an annular receiving-chamber,an annular depression adjacent to said rim and adapted for engagementwith an inturned flange on the lower end of a tubular bedpost, a spiraldepression in its periphery, and an inturned bearing-flange at its upperend, a pintle provided with bearing-washers at its upper end and base,and a (raster-wheel carried by said pintle, substantially as set torth.

7. The combination in a caster, ol a holding-bushing consisting of acylindrical sleeve having a longitudinally-arranged triangular gap inits periphery an outturned alnltmentrim at its lower end, an inturnedannular lold on said rim forming an annular receivingchamber, an annulardepression adjacent to said rim and adapted for engagement with aninturned flange on the lower end of a tubular bedpost, and an inturnedbearing-llange at its upper end, a pintle provided with hearingwashersat its upper end and base, and a easterwhcel carried by said pintle,substantially as set forth.

8. The combination in a caster, of a holding-bushing consisting of acylimlrieal sleeve having a longitudinally-arranged triangular gap inits periphery an outturned abutmentrim at its lower end, an inturnedannular told on said rim forming an annular receivingchamber, an annulardepression adjacent to said rim and adapted for engagement with aninturned flange on the lower end of a tubular bedpost, a spiraldepression in its periphery, and an inturned bearing-flange at its upperend, a pintlc provided with l earing-washers at its upper end and base,and a easter-wlnwl carried by said pintle,su bstantially as set forth.

Signed at Chicago, Illinois, this 17th day of December, 1903.

FREDERICK F. BISUIIOFF.

\Vitnesscs:

ROBERT BUnNs, M. H. HoLMns.

